| Willimantic to Sesena | 3,480.41 mi (5,601.18 km) |
| Willimantic to Sestao | 3,420.92 mi (5,505.44 km) |
| Willimantic to Sevilla | 3,457.16 mi (5,563.76 km) |
| Willimantic to Sevilla La Nueva | 3,457.43 mi (5,564.19 km) |
| Willimantic to Silla | 3,659.62 mi (5,889.60 km) |
| Willimantic to Silleda | 3,193.18 mi (5,138.92 km) |
| Willimantic to Sitges | 3,704.46 mi (5,961.76 km) |
| Willimantic to Socuellamos | 3,548.18 mi (5,710.24 km) |
| Willimantic to Soller | 3,793.14 mi (6,104.48 km) |
| Willimantic to Solsona | 3,667.67 mi (5,902.55 km) |
| Willimantic to Son Servera | 3,828.80 mi (6,161.86 km) |
| Willimantic to Sonseca | 3,480.48 mi (5,601.29 km) |
| Willimantic to Sopelana | 3,420.20 mi (5,504.28 km) |
| Willimantic to Soria | 3,489.59 mi (5,615.96 km) |
| Willimantic to Suances | 3,369.37 mi (5,422.47 km) |
